<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <div id="test" class="one" data-uid="two">hello world</div>
    <script>
        var test=document.getElementById("test")
        console.log(test.id)
        console.log(test.className)
        console.log(test.dataset.uid)
    </script>
</body>
</html>